A mobile computing application will be developed for Apple iOS and Google Android based mobile devices. This application will be targeted towards healthcare providers who make routine use of mobile devices in their daily work. The application will be capable of capturing all information required for submission to the Vaccine Adverse Event Reporting System (VAERS) and securely transmitting the information to the VAERS database. The application will also serve as a reference to healthcare providers for vaccine, vaccine safety, and other vaccination topics. No other application currently exists to provide these needed capabilities. Phase I of this project entails the design and development of the application, and will serve as the proof of principal prototype. Phase II will consist of preparing the application for broad distribution to healthcare providers. The distribution and use of this application will increase the rate of reporting to the VAERS system and will also provide higher quality, and more complete data. This will benefit public health officials in that the availability of higher quality data and enhanced surveillance will allow for better informed public health decisions.